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BS 5839-6 is the key standard for fire detection in domestic premises. It is written to assist the non-specialist in compliance and will help make installations easier to audit. The standard is used by enforcing authorities and contractors, and applies to domestic premises accommodating single families, houses in multiple occupation (HMOs) and sheltered housing (housing and common areas). It applies both to new and existing housing.
Each clause of the document is split into 2 parts. Firstly, there is the commentary – in italics – this sets out the reasoning behind the recommendations. The recommendations are written in upright (roman) type, so it is quite possible to simply refer to these alone. The intention of the commentary is to make the document easier to use; whether it succeeds in this aim is a matter of personal perception.
BS 5839: Pt.6 is not intended for householders themselves, but to provide guidance and recommendations for architects and other building professionals, enforcing authorities, contractors and others responsible for implementing fire precautions in buildings. Householders should refer to the government guidelines.
The Code of Practice should not be quoted as if it was a specification and the standard itself warns that particular care should be taken to ensure that claims of compliance are not misleading.
It is also pointed out that compliance with a British Standard cannot automatically confer legal immunity. However, for a landlord or installer, compliance with the latest Code is obviously the best line of defence in any claim made against them.
This Code of practice covers fire alarm systems starting from a simple self-contained battery smoke alarm right through to major systems with central panel/s in accordance to BS5839-pt1.
BS 5839: Pt.6 covers the following domestic building types:
Individual sheltered accommodation as well as their common parts
Houses in multiple occupation (HMOs)
Certain NHS housing in the community
Houses divided into several self-contained single-family dwelling units
Not included are hostels, caravans, boats (other than permanently moored) and mmunal parts of blocks or flats or maisonettes.
BS 5839: Pt.6 is primarily concerned with saving lives and reducing injuries. However, it does contain within it recommendations for helping to reduce property damage too. Good fire safety practice and adherence to the Code can give the best possible early warning of fire and so reduce the financial impact as well as human suffering.
Relates to system engineering, not level of protection.
BS 5839: Pt.6 grades fire detection systems from Grade F up to Grade A. Generally speaking, the greater the fire risk and the more demanding the application, the more comprehensive the system needs to be.
BS 5839: Pt.6 acknowledges the advantages of the single, battery operated smoke alarm. They are simple to install and offer protection at very low cost. Battery operated smoke alarms conforming to BS EN 14604:2005 are recommended. Battery operated smoke alarms are typically suitable for owner-occupied buildings (existing buildings) with up to two storeys.
Single story tenanted properties were allowed in the last version (2004) of this standard to be fitted with Grade F alarms. This has now been changed to a grade D requirement. As an aside, landlords have now been found liable in cases where tenants themselves have disabled an alarm. For this reason, it is unlikely that landlords will be able to trust tenants to adequately look after a smoke alarm. The Code highlights the fact that battery powered smoke alarms are also only suitable for owner-occupied properties if the likelihood is, that batteries will be replaced within five days of a low battery signal.
The Code does not recommend an application for alarms without backup power source any longer. Grade E systems have serious drawbacks: power cuts or the termination of supply for whatever reason disables them totally. They can also be rendered useless by the tripping of a protective device, or even - in some cases - by the fire itself. Householders may also disable them at the mains all too easily if false alarms are a problem. Safelincs Ltd is therefore only offering mains-powered smoke alarms WITH backup battery.
The problems outlined above can be overcome by using mains powered alarms that incorporate, within each alarm, a stand-by supply such as a primary or rechargeable battery.The alarms have to be interconnected either through wiring or radio-interlink. The mains power supply can come from a dedicated power supply directly from the fuse box or from the nearest permanently powered light fitting, as long as the smoke alarm heads can be removed without removing the base as well.
Grade D is required for new, owner-occupied buildings of up to three storeys, two storey rented properties and existing, owner-occupied buildings of more than two storeys. Very large storeys (>200m2) might require Grade B alarm system.
A question remains for landlords - can they be sure that their tenants are paying their electricity bills? Given that many tenants may have low incomes (in many local authorities, 70% or more of all tenants are on subsidised incomes), they may well experience periods of disconnection - and yet the landlord could well be liable if the alarm fails to sound because the tenant has not paid his or her bills! Unfair or not, as the law stands, it obviously makes good commercial sense to ensure that a reliable, ideally re-chargeable and sealed-in backup battery is in place.
The minimum back-up duration recommended is 72 hours, and the Code acknowledges that there could well be circumstances where a longer stand-by period is justified e.g. tenants’ inability to pay their electricity bill.
More expensive high specification systems can offer connection of all fire detection devices to a common power supply via low voltage transformers, or interlinked fire and security systems. Again, a minimum 72 hour back-up is recommended by the Code. Due to the complexity of A, B and C Grades, we have omitted the descriptions from this short guide.
This relates to the level of protection afforded by the system.
Within the A - F grades defined earlier, the standard identifies three different categories of protection:
You can buy the full BS 5839-6:2013 standard online.
When first introduced in 1995, the BS 5839: Pt.6 Code of Practice became the most important set of recommendations ever made on fire safety in the home.
It had an immediate impact on architects, system designers, installers and landlords in the private or public sector, all of whom were required to familiarise themselves with these important recommendations. Landlords in particular needed to abide by these recommendations, as legal liability with regard to ‘duty of care’would undoubtedly become a serious issue should a fire occur in an inadequately protected property.
In short, BS 5839: Pt.6 became the essential guide to providing adequate fire protection in all dwelling types.
In September 2004, the Code of Practice was extensively revised and updated by the publication of BS 5839: Pt.6: 2004 which superseded BS 5839: Pt.6: 1995, which is now withdrawn. The changes therein are important and need to be fully understood and appreciated by all those with responsibility for fire safety in domestic dwellings.
Amn updated standard came out in 2013 and included for the first time common areas in sheltered housing. Carbon monoxide detectors were also permitted as fire alarm sensors and the requirement for rented accommodations were tightened.